In 2001, the U.S. State Department, the International Labor Organization and others reported child slavery on many cocoa farms in the Ivory Coast, source of 43% of the world's cocoa. Subsequent research by the International Institute of Tropical Agriculture revealed some 284,000 children between the ages of 9 and 12 working in hazardous conditions on West African cocoa farms. Of these children, it was reported that some 12,000 child cocoa workers that had participated in the study were likely to have arrived in their situation as a result of child trafficking.